Why DC May Replace AC (2019)
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Why DC May Replace AC (2019)
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Re: Why DC May Replace AC (2019)
#2> In China and Europe, new cities and villages are being envisioned that will be entirely DC powered.
Citation needed? Other then HVDC links or micro-generation I can't see a practical use for DC unless you are entirely off-grid.
Re: Why DC May Replace AC (2019)
#3> Direct Current (DC) electric power is an emerging disruptive technological area that has the potential to stimulate economic growth, inspire innovation, increase research and development opportunities, create jobs, and simultaneously advance environmental sustainability.
Was this published in the early 1900s? There is no date and DC is definitely not emerging nor disruptive.
DC won't replace AC for those who rely on remote power production.
Re: Why DC May Replace AC (2019)
#4> Direct Current (DC) electric power is an emerging disruptive technological area that has the potential to stimulate economic growth, inspire innovation, increase research and development opportunities, create jobs, and simultaneously advance environmental sustainability. Was this published in the early 1900s? There is no date and DC is definitely not emerging nor disruptive. DC won't replace AC for those who rely o…
Why won’t it replace it, out of interest?
Re: Why DC May Replace AC (2019)
#5> Direct Current (DC) electric power is an emerging disruptive technological area that has the potential to stimulate economic growth, inspire innovation, increase research and development opportunities, create jobs, and simultaneously advance environmental sustainability. Was this published in the early 1900s? There is no date and DC is definitely not emerging nor disruptive. DC won't replace AC for those who rely o…
Why won’t it replace it, out of interest?
Same reason why it didn’t win out 100 years ago. It isn’t as efficient.
Re: Why DC May Replace AC (2019)
#6Re: Why DC May Replace AC (2019)
#7Pretty much all device in a household can function using only DC and now we can also generate DC directly DC at home, thanks to Solar. So we can cut the losses switching to AC and DC.
Re: Why DC May Replace AC (2019)
#8Pretty much all device in a household can function using only DC and now we can also generate DC directly DC at home, thanks to Solar. So we can cut the losses switching to AC and DC.
Counter-example: Motors consume >= 25% of all electrical power, and the majority of household and industrial motors are AC. Think air conditioners, fans, compressors, etc.
Re: Why DC May Replace AC (2019)
#9The author appears to be Gregory Reed, Professor at the University of Pittsburgh who focuses on grid things. He's also the Chief Science Advisor for: https://www.emergealliance.org/
Definitely seems like someone who would have appropriate knowledge to make statements like those in the article, though maybe with a vested interest in things.
Re: Why DC May Replace AC (2019)
#10> Direct Current (DC) electric power is an emerging disruptive technological area that has the potential to stimulate economic growth, inspire innovation, increase research and development opportunities, create jobs, and simultaneously advance environmental sustainability. Was this published in the early 1900s? There is no date and DC is definitely not emerging nor disruptive. DC won't replace AC for those who rely o…
This is, in fact, precisely backward.
DC is great for transmitting power. You crank the voltage, use all of the copper wire (no pesky skin effect), and sync to the grid at the DC-AC conversion point.
The limiting factor to DC was conversion losses. The Pacific DC Intertie needed to use gigantic, toxic mercury vapor tube diodes for the conversion for a very long time.
Now that we use high voltage semiconductors, that's no longer a problem. We easily convert between DC voltages as well as AC with quite remarkable efficiency.